Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 08m at 11:19 am (0.5 ft)
Next high tide : 6:23 pm (3.1 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 2047

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:273.36:503.212:220.212:500.26:436:28Waxing Gibbous1Tue
2Wed7:093.47:293.212:560.21:300.26:446:27Full Moon2Wed
3Thu7:483.58:063.11:240.12:050.26:456:25Full Moon3Thu
4Fri8:233.58:413.11:490.12:370.26:466:23Full Moon4Fri
5Sat8:553.49:153.02:150.13:060.26:476:22Full Moon5Sat
6Sun9:273.39:502.82:430.23:340.36:486:20Waning Gibbous6Sun
7Mon9:583.210:262.73:150.34:040.56:496:18Waning Gibbous7Mon
8Tue10:333.011:062.53:500.44:390.66:506:17Waning Gibbous8Tue
9Wed11:132.811:512.34:280.55:220.86:516:15Waning Gibbous9Wed
10Thu12:002.75:120.76:220.96:526:13Third Quarter10Thu
11Fri12:432.312:552.76:050.88:230.96:536:12Third Quarter11Fri
12Sat1:402.31:552.67:110.89:270.86:546:10Third Quarter12Sat
13Sun2:422.42:592.78:290.810:150.76:556:09Third Quarter13Sun
14Mon3:472.64:052.89:530.610:550.46:576:07Waning Crescent14Mon
15Tue4:472.95:053.011:000.411:310.26:586:06Waning Crescent15Tue
16Wed5:383.35:573.211:540.16:596:04Waning Crescent16Wed
17Thu6:263.76:463.412:06-0.112:44-0.27:006:02New Moon17Thu
18Fri7:124.07:343.512:45-0.31:34-0.47:016:01New Moon18Fri
19Sat8:004.38:233.51:26-0.42:24-0.57:025:59New Moon19Sat
20Sun8:494.39:133.42:09-0.53:14-0.57:035:58New Moon20Sun
21Mon9:404.210:043.32:55-0.44:05-0.37:045:56Waxing Crescent21Mon
22Tue10:334.010:593.13:42-0.35:01-0.17:055:55Waxing Crescent22Tue
23Wed11:313.711:583.04:33-0.16:110.17:075:54Waxing Crescent23Wed
24Thu12:343.45:360.27:260.37:085:52First Quarter24Thu
25Fri1:022.81:403.27:180.48:330.47:095:51First Quarter25Fri
26Sat2:082.82:463.08:480.59:320.47:105:49First Quarter26Sat
27Sun3:162.83:522.89:590.510:240.47:115:48First Quarter27Sun
28Mon4:212.94:512.810:580.411:080.37:125:47Waxing Gibbous28Mon
29Tue5:173.15:402.811:480.411:440.37:145:45Waxing Gibbous29Tue
30Wed6:033.26:232.812:300.37:155:44Waxing Gibbous30Wed
31Thu6:443.37:022.812:150.21:080.37:165:43Full Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 2:51 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a spring phase. Tonight's moon is 90% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Block Island, RI tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Block Island, RI?

Tide predictions for Block Island, RI come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is Waxing Gibbous (90% illuminated). This places Block Island, RI in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA